指撥開關，超音波感測器，中斷服務系統

https://www.tutorialspoint.com/arduino/index.htm

指撥開關
sw1file
先側殿為
int sw=7;
int swv;
void setup() {
  // put your setup code here, to run once:
          pinMode(sw,INPUT_PULLUP);
          Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  swv=digitalRead(sw);
  Serial.println(swv);
  delay(2000);
}
================================
只播開關控制LED燈
int sw1=2;
int sw2=3;
int led1=7;
int led2=8;
int swv1;
int swv2;
void setup() {
  // put your setup code here, to run once:
          pinMode(sw1,INPUT_PULLUP);
          pinMode(sw2,INPUT_PULLUP);
          pinMode(led1,OUTPUT);
          pinMode(led2,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  swv1=digitalRead(sw1);
  swv2=digitalRead(sw2);
  if(swv1==0)
  {
    digitalWrite(led1,HIGH);
  }
  else
  {
    digitalWrite(led1,LOW);
  }
  if(swv2==0)
  {
    digitalWrite(led2,HIGH);
  }
  else
  {
    digitalWrite(led2,LOW);
  }
}
=======================
//超音波感測器
#include <Ultrasonic.h>
Ultrasonic ultrasonic(12,13);
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
      Serial.print(ultrasonic.Ranging(CM));
      Serial.println("  cm");
      delay(3000);
}
=======================
//超音波感測器控制LED燈蜂鳴器
#include <Ultrasonic.h>
Ultrasonic ultrasonic(12,13);
int led=7;
int bee=2;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(led,OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
      int dic=ultrasonic.Ranging(CM);
      Serial.print(dic);
      if (dic<=20)
      {
        digitalWrite(led,HIGH);
        for(int i=0;i<10;i++)
        {
          tone(bee,1000);
          delay(50);
          tone(bee,500);
          delay(50);
        }
      }
      else
      {
        digitalWrite(led,LOW);
        noTone(bee);
      }
      delay(3000);
}
==============================
中斷服務系統
(1)attachInterrupt():用來指定外部服務函數
   attachinterrupt(interrupt,function,mode);
(a)interrupt:外部中斷編號(int0,int1)D2 and D3
(b)function:中斷服務函數
(c)mode:中斷觸發信號
   LOW:
   CHANGE:HIGH-LOW,LOW-HIGH
   RISING:LOW_HIGH
   FALLING:HIGH-LOW
==============
int in=0;
int pb1=2;
int led=8;
volatile boolean state=false;

void setup() {
  // put your setup code here, to run once:
  pinMode(led,INPUT);
  pinMode(pb1,INPUT);
  attachInterrupt(in,fun1,RISING);
 
}
void fun1()
{
  state=!state;
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(led,LOW);
 
  if (state)
  {
    digitalWrite(led,HIGH);
    delay(2000);
    digitalWrite(led,LOW);
    delay(50);
  }
  else
  {
     digitalWrite(led,LOW);
  }
}
==================
#define pb1 2
#define pb2 3
#define led1 8
#define led2 9
volatile boolean s1=false;
volatile boolean s2=false;
void setup() {
  // put your setup code here, to run once:
  pinMode(led1,INPUT);
  pinMode(led2,INPUT);
  pinMode(pb1,INPUT);
  pinMode(pb2,INPUT);

  attachInterrupt(0,chin1,RISING);
  attachInterrupt(1,chin2,RISING);
}
void chin1()
{
  s1=true;
  s2=false;
}
void chin2()
{
  s1=false;
  s2=true;
}
void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(led1,LOW);
  digitalWrite(led2,LOW);
  if (s1)
  {
    digitalWrite(led1,HIGH);
  }
  if (s2)
  {
    digitalWrite(led2,HIGH);
  }
  delay(3000);
}
==========================